Harry dodg-e



Jan.`29, 1924. 1

l y H. DODGE HEAT CONSERVING DEVICE Find nec. 24. i921 2 Sheets-Sheet l INVENTOR.

\ H. DODGE HEAT- co'NsEnvING DEVICE Filed Dec.v24. 1921 2 Sheets-Sheet 2 INVEN TOR.

ATTORNEY.

Patented `ian. 29, 1924.

rar

HARRY ponen, or nnnvnns, MASSACHUSETTS..

HEAT-CONSERVING DEVICE.

Application filed December 24, 1921. Serial No. 524,790.

T o all 'whom it may concern.'

Bel it known that I, HARRY Dosen, a citizen of the United States, residing at Danvers, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvementsin Heat-Conserving Devices, of which the following is. a specification.

This invention relates to heat conserving devices, andhas for one of its objects to provide a simply constructed device adapted to be installed in a smoke iiue through which the heated products of combustion are caused to pass, to cause a portion of the heat to be radiated into a room or space adjacent to the flue.

Another object of the invention is to pro-` vide a device of this character around which air is caused to circulate and pass from a low'er, cooler position toa higher and more highly heated position.

Another object of the invention is to pro- -vide a'device of this character which mayl be `installed in a smoke ue without detriment to its draft qualities.l

Another object of the invention is to provide a device of this character which may be readily installed without material structural'change in chimneys orflues of various f shapes and sizes7 that arealready constructed or installed in new ues whilev being constructed.

With these and other objects in view the invention consists in certain novel features of construction as hereinaftery shown and described and then speciiically' pointed out in the claims; andin the drawings illustrative of the preferred embodiment of the inventionz Fig. 1 is a perspective view of the improved device in its preferred form, ready to be installed in a smoke iiue.

Fig. '2 is a front elevation partly in sec tion, of the improved device installed in a conventional chimney.

Fig. 3 is section on the line 3 3 of Fig. 2.

,Figure 4.- is a transverse section on the line 4-4 of Fig. 2.

Fig. 5 is a front elevation of a modified form of the structure.

Fig. 6 is a section on the line 6-6 of Fig. 5. 4

Fig. 7 -isa Section on the line 7-7 of Fig. 6.

Fig. 8 is a vertical sectionof another modified form of the construction.

The improved device comprises in general a casing of relatively thin metal installed in one or more of the walls of a smoke flue with a lateral opening providing communication between the interior of the iue and the room or other space adjacent thereto, the opening 'being provided with a closure of relatively thin metal through which a portion of the heat from the products of the combustion passing through the flue are radiated into `the room or space.

The improved device when built into the flue when the latter is constructed, is preferably formed substantially as shown in Fig.

1,'but when installed in chimneys or other flues after being constructed, the construction shown in Figs. 5, 6 and 7 will preferably. be employed.

The structure shown in Figs. 1, 2, 3, and a comprises a hollow metal casing 10 open at the ends with itsinterior corresponding to the interior ofthe body of the flue, so that when installed therein, Athe interior of the flue is not obstructed by the presence of the casing.

The casing is formed with4 a relatively large openingin the upper part and surrounded by an oblong frame 11, and providing communication between the interior of the flue and the room or space to be heated. ,At the ends the casing 10 is formed with outstanding flanges 12 and 13 to be embedded in the brick work 14, and thus rmly support the casing in position.

The'brickwork is spaced from the outer face of the casing l0, leaving an air space 1.5 entirely around the casing except where the frame 11 is located.

The confronting faces of the flanges 12 and 13 are preferably formed with stop shoulders represented at 16 and 17, to guide the location of the brick work to form the air spaces 15.

The-inner faces of the frame portion-11 are formed with stop ribs 18 to support a thin plate or diaphragm 19 of suitable metal and through which a portion of the heat from the smoke and other products of the combustion freely radiates into the room or I sIpace adjoining the line.

olding ribs or stops 20 are detachably connected as by screws 2l to the inner faces of the frame 11 and thus coact with the stop The diaphragm 19 is preferably corrugated as shown, to, increase the radiating surface` Without enlarging the frame 1l.

Attached to the front wall of the casing 10 at the bottom is aninlet flue 22 connecting at its inner end with the adjacent portion of the air space 15, as shown in Fig. 3. The lower member of the frame 11 is formed with an opening 23 externally of the diaphragm, so that the cooler air entering through the inlet flue 22 at the bottom of the room passes up through the opening 23 and in contact with the heat radiating through the member `19., and the circulation of the air is thereby materially accelerated.

The construction disclosed in Figs. 1, 2, 3 and 4 will be employed when the improved device is built into a flue when first constructed, but when installed in smaller chimneys or flues already constructed, the form of structure shown in Fi'gs, 5, 6 and 7 will be employed.

In this modified construction a frame portion 24 only is employed, similar to the portion 11 shown inFigs. 1, 2, 3 and 4, and embedded in anopening formed for that purpose inthe breast of the chimney 14.

In the modified structure stop ribs 25 are formedy in the member 24 to support a diaphragm 26, the latter held in place by stops 27 detachably held in place by screws or the like 28, the parts 25, 26, 27' and 28 corresponding to the parts 18--19--20-21y of the structure shown 'in Figs. 1-2-3 and 4.

In the modified structure, an intake iue 29, similar to the intake fiue 22, is formed at the lower part of the frame 24, and communicates at 30 with the front of the radiating member 26.

n Fig. 8 another modified construction is shown consisting in arranging the intake flue 22 at the bottom ofthe frame 11 and extending the frame 11 and ribs 18 and 20 of the diaphragm 19 to the upper end of the casing 10, which may be found of advantageY in installing a device in certain locations.

The various modified structures shown do not constitute a departure from the principle ofthe invention.

The casing 10 and its attached parts are Wholly of metal, with the casing 10, frame 11, flanges 12 and 13, ribs 18 and intake 22 preferably integral and of cast iron, as thin as possible, while the diaphragm 19 will be ofrelatively thin sheet metal, and may' be of galvanized steel or iron, brass or other metal or vmetallic compounds.

It is not desired, however, to limit the device to the use of any specific material or compounds of materials.

The interior of the casing 10, it will be noted, is the same size as the interior of the flue 14, hence the presence of the device does not reduce or check the draft of the flue.

The improved device may be adapted without material structural change to flues of various sizes and to smoke stacks or the like.

At the front of the flue, or the portion next to the room or space to be heated, the air space 15 is left open and in communication with the room or space to be heated as indicated at the left of Fig. 2 and in Fig. 4, so that the air in the air space will be heated and pass into the room and be replaced by cooler air, to materially increase the circulation and correspondingly increase the heating effect.

The preferred embodiment of the invention is disclosed in the drawings and set forth in the specification, but it will be understood that modifications within the scope of the claimed invention may be made in the construction without departing from the principle of the invention or sacrificing any of its advantages.

Having thus described the invention what is claimed as new is.:

1. A device of the class described comprising a frame adapted to be inserted in an opening in a flue through which products of combustion are caused to pass, stop ribs within said frame, a diaphragm of relatively thin metal bearing upon said ribs, and stops attac-hed to said frame and engaging said diaphragm. i

2. A device of the class described comprising a frame adapted to be inserted in an opening in a fiue through which products of combustion are caused to pass, stop ribs withinsaid frame, a diaphragm ofl relatively thin metal bearing upon said ribs, stops at'- tached to said frame and engaging said dia-- phragm, and an air intake iiue' leading through the bottom ofl said frame and in advance ofisaid diaphragm.

3. A device of the class described comprising a frame adapted to be inserted in an opening in a flue through which products of combustion are caused to pass', a diaphragm of relatively thin metal supported in said frame, and an airl intake flue leading through the bottom of said frame and in advance of said diaphragm.

4. A device of the class described comprising a casingopen at the ends and with an opening in one side, a closure for said side opening and constituting a heat radiating element of relatively thin metal, an air intake fiue opening at its lower end below the line of the side openingand its heat radiat,u ing element and opening at its upper end eX- ternally of the radiating element', said casing adapted to be disposedlin a smoke flue with the side opening thereof communicating with the room associating With the device.

5. The combination with a smoke Aflue having an opening in the front in communication with a room, of a casing open at the ends and embedded in the -fiue opening. and

having an opening in one Wall registering with the flue opening, a closure of relatively thin metal for the casing opening and constituting a radiating element, and an air intake iue opening at its lower end below the line of the said opening and heat radiating element and opening at itsupper end externally of the radiating element.

6. A device of the class described comp-rising a casing open at the ends and with an opening in one side and with laterally d.- rected flanges at the open ends, a closure for the side opening of the casing of relatively `thin metal and constituting a heat radiatingr element, an air intake flue opening at its lower end below the line of the side opening of the casing and opening at the upper end in advance of the radiating element, said casing adapted to be embedded in a flue with the flanges supporting the casing Walls spaced from the adjacent portions of the flue structure to provide an au' space surrounding the casing.

7. A device of the class described compris ing a casing open at the ends and with an opening in one side and having inwardly directed bearing ribs, a closure for said opening and supported by said bearing ribs and constituting a heat radiating element, an air intake flue opening at its lower end below the line of the side opening and its heat radiating element and opening at its upper end externally of the radiating element, said casing adapted to be disposed in a smoke flue with the side opening thereof communieating With the room associated Withfthe device.

8. A device of the class described compris ing a casing adapted to be embedded in an opening in a smoke flue and having an opening in one side, a closure for said opening of relatively Jhin metal and constituting a heat` radiating element, and an air intake Hue opening at its lower end below the line of the said opening and its heat radiating element and opening at its upper end externall)7 of the radiating element.

In testimony whereof, I affix my signature hereto.

HARRY DODGE. 

